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Influence of the Electrode Material on the Electrochemical Behavior of Carbon Paste Electrodes Modified with Meldola Blue and Methylene Green Adsorbed on a Synthetic Zeolite

Gligor, Delia; Craciunescu, Izabella; Popescu, Ionel Catalin and Gorton, Lo LU (2010) In Electroanalysis 22(5). p.509-512
Abstract
Carbon paste electrodes modified with a phenoxazine derivative, Meldola blue, and a phenothiazine derivative, methylene green, both strongly adsorbed on a synthetic zeolite were investigated using either glassy carbon powder (Sigradur K, SK) or single-walled carbon nanotubes (SWCNT) as conductive electrode material. In the case of SWCNT based electrodes, the formal potential of both mediators was pH dependent, as expected for a redox process involving proton transfer. In contrast, the formal potential of both mediators of SK based modified electrodes was practically insensitive to pH. This behavior is discussed in terms of interactions existing in the heterogeneous system mediator-zeolite-electrode material.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Zeolites, Nanotubes, Phenothiazine, Phenoxazine, nanotubes, Carbon, Zeolite modified carbon paste electrodes, Glassy carbon powder
in
Electroanalysis
volume
22
issue
5
pages
509 - 512
publisher
John Wiley & Sons
external identifiers
  • wos:000275802900003
  • scopus:77149178429
ISSN
1040-0397
DOI
10.1002/elan.200900408
language
English
LU publication?
yes
id
e80eb882-d1c1-4570-880a-fea863e34719 (old id 1588071)
date added to LUP
2010-04-22 11:19:06
date last changed
2018-05-29 10:51:34
@article{e80eb882-d1c1-4570-880a-fea863e34719,
  abstract     = {Carbon paste electrodes modified with a phenoxazine derivative, Meldola blue, and a phenothiazine derivative, methylene green, both strongly adsorbed on a synthetic zeolite were investigated using either glassy carbon powder (Sigradur K, SK) or single-walled carbon nanotubes (SWCNT) as conductive electrode material. In the case of SWCNT based electrodes, the formal potential of both mediators was pH dependent, as expected for a redox process involving proton transfer. In contrast, the formal potential of both mediators of SK based modified electrodes was practically insensitive to pH. This behavior is discussed in terms of interactions existing in the heterogeneous system mediator-zeolite-electrode material.},
  author       = {Gligor, Delia and Craciunescu, Izabella and Popescu, Ionel Catalin and Gorton, Lo},
  issn         = {1040-0397},
  keyword      = {Zeolites,Nanotubes,Phenothiazine,Phenoxazine,nanotubes,Carbon,Zeolite modified carbon paste electrodes,Glassy carbon powder},
  language     = {eng},
  number       = {5},
  pages        = {509--512},
  publisher    = {John Wiley & Sons},
  series       = {Electroanalysis},
  title        = {Influence of the Electrode Material on the Electrochemical Behavior of Carbon Paste Electrodes Modified with Meldola Blue and Methylene Green Adsorbed on a Synthetic Zeolite},
  url          = {http://dx.doi.org/10.1002/elan.200900408},
  volume       = {22},
  year         = {2010},
}